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Residential Mortgage Securities and MSR-Related Assets (Sale of MBS) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Sales Proceeds | $ 1,798,101 | $ 195,333 | $ 3,062,742 | $ 404,796
Gains/(Losses) | 129,666 | 7,710 | 61,649 | 32,319
Agency MBS |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Sales Proceeds | 535,742 | 103,345 | 1,500,875 | 103,345
Gains/(Losses) | 3,563 | (2,272) | (19,291) | (2,272)
Non-Agency MBS |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Sales Proceeds | 1,054,980 | 70,818 | 1,318,842 | 196,912
Gains/(Losses) | 151,095 | 8,823 | 107,951 | 26,976
CRT securities |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Sales Proceeds | 207,379 | 21,170 | 243,025 | 104,539
Gains/(Losses) | $ (24,992) | $ 1,159 | $ (27,011) | $ 7,615

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- Definition Net gain (loss) resulting from the sales of securitized, pay-through debt securities collateralized by real estate mortgage loans (mortgages). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.13(h)) -URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 + Details
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- Definition Amount of cash inflow from sale of investment in mortgage-backed security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3179-108585 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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